mirror of
https://github.com/azure-rtos/threadx
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271 lines
8.8 KiB
C
271 lines
8.8 KiB
C
/**************************************************************************/
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/* */
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/* Copyright (c) Microsoft Corporation. All rights reserved. */
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/* */
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/* This software is licensed under the Microsoft Software License */
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/* Terms for Microsoft Azure RTOS. Full text of the license can be */
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/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
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/* and in the root directory of this software. */
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/* */
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/**************************************************************************/
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/**************************************************************************/
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/**************************************************************************/
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/** */
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/** Thread-Metric Component */
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/** */
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/** Preemptive Scheduling Test */
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/** */
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/**************************************************************************/
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/**************************************************************************/
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/**************************************************************************/
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/* */
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/* FUNCTION RELEASE */
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/* */
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/* tm_preemptive_scheduling_test PORTABLE C */
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/* 6.1.7 */
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/* AUTHOR */
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/* */
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/* William E. Lamie, Microsoft Corporation */
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/* */
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/* DESCRIPTION */
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/* */
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/* This file defines the preemptive scheduling test. */
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/* */
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/* RELEASE HISTORY */
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/* */
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/* DATE NAME DESCRIPTION */
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/* */
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/* 10-15-2021 William E. Lamie Initial Version 6.1.7 */
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/* */
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/**************************************************************************/
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#include "tm_api.h"
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/* Define the counters used in the demo application... */
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unsigned long tm_preemptive_thread_0_counter;
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unsigned long tm_preemptive_thread_1_counter;
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unsigned long tm_preemptive_thread_2_counter;
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unsigned long tm_preemptive_thread_3_counter;
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unsigned long tm_preemptive_thread_4_counter;
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/* Define the test thread prototypes. */
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void tm_preemptive_thread_0_entry(void);
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void tm_preemptive_thread_1_entry(void);
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void tm_preemptive_thread_2_entry(void);
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void tm_preemptive_thread_3_entry(void);
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void tm_preemptive_thread_4_entry(void);
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/* Define the reporting thread prototype. */
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void tm_preemptive_thread_report(void);
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/* Define the initialization prototype. */
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void tm_preemptive_scheduling_initialize(void);
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/* Define main entry point. */
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void tm_main()
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{
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/* Initialize the test. */
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tm_initialize(tm_preemptive_scheduling_initialize);
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}
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/* Define the preemptive scheduling test initialization. */
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void tm_preemptive_scheduling_initialize(void)
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{
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/* Create thread 0 at priority 10. */
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tm_thread_create(0, 10, tm_preemptive_thread_0_entry);
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/* Create thread 1 at priority 9. */
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tm_thread_create(1, 9, tm_preemptive_thread_1_entry);
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/* Create thread 2 at priority 8. */
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tm_thread_create(2, 8, tm_preemptive_thread_2_entry);
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/* Create thread 3 at priority 7. */
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tm_thread_create(3, 7, tm_preemptive_thread_3_entry);
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/* Create thread 4 at priority 6. */
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tm_thread_create(4, 6, tm_preemptive_thread_4_entry);
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/* Resume just thread 0. */
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tm_thread_resume(0);
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/* Create the reporting thread. It will preempt the other
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threads and print out the test results. */
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tm_thread_create(5, 2, tm_preemptive_thread_report);
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tm_thread_resume(5);
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}
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/* Define the first preemptive thread. */
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void tm_preemptive_thread_0_entry(void)
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{
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while(1)
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{
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/* Resume thread 1. */
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tm_thread_resume(1);
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/* We won't get back here until threads 1, 2, 3, and 4 all execute and
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self-suspend. */
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/* Increment this thread's counter. */
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tm_preemptive_thread_0_counter++;
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}
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}
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/* Define the second preemptive thread. */
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void tm_preemptive_thread_1_entry(void)
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{
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while(1)
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{
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/* Resume thread 2. */
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tm_thread_resume(2);
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/* We won't get back here until threads 2, 3, and 4 all execute and
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self-suspend. */
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/* Increment this thread's counter. */
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tm_preemptive_thread_1_counter++;
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/* Suspend self! */
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tm_thread_suspend(1);
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}
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}
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/* Define the third preemptive thread. */
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void tm_preemptive_thread_2_entry(void)
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{
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while(1)
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{
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/* Resume thread 3. */
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tm_thread_resume(3);
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/* We won't get back here until threads 3 and 4 execute and
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self-suspend. */
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/* Increment this thread's counter. */
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tm_preemptive_thread_2_counter++;
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/* Suspend self! */
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tm_thread_suspend(2);
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}
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}
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/* Define the fourth preemptive thread. */
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void tm_preemptive_thread_3_entry(void)
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{
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while(1)
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{
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/* Resume thread 4. */
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tm_thread_resume(4);
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/* We won't get back here until thread 4 executes and
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self-suspends. */
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/* Increment this thread's counter. */
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tm_preemptive_thread_3_counter++;
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/* Suspend self! */
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tm_thread_suspend(3);
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}
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}
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/* Define the fifth preemptive thread. */
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void tm_preemptive_thread_4_entry(void)
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{
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while(1)
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{
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/* Increment this thread's counter. */
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tm_preemptive_thread_4_counter++;
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/* Self suspend thread 4. */
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tm_thread_suspend(4);
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}
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}
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/* Define the preemptive test reporting thread. */
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void tm_preemptive_thread_report(void)
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{
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unsigned long total;
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unsigned long relative_time;
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unsigned long last_total;
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unsigned long average;
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/* Initialize the last total. */
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last_total = 0;
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/* Initialize the relative time. */
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relative_time = 0;
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while(1)
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{
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/* Sleep to allow the test to run. */
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tm_thread_sleep(TM_TEST_DURATION);
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/* Increment the relative time. */
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relative_time = relative_time + TM_TEST_DURATION;
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/* Print results to the stdio window. */
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printf("**** Thread-Metric Preemptive Scheduling Test **** Relative Time: %lu\n", relative_time);
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/* Calculate the total of all the counters. */
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total = tm_preemptive_thread_0_counter + tm_preemptive_thread_1_counter + tm_preemptive_thread_2_counter
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+ tm_preemptive_thread_3_counter + tm_preemptive_thread_4_counter;
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/* Calculate the average of all the counters. */
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average = total/5;
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/* See if there are any errors. */
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if ((tm_preemptive_thread_0_counter < (average - 1)) ||
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(tm_preemptive_thread_0_counter > (average + 1)) ||
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(tm_preemptive_thread_1_counter < (average - 1)) ||
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(tm_preemptive_thread_1_counter > (average + 1)) ||
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(tm_preemptive_thread_2_counter < (average - 1)) ||
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(tm_preemptive_thread_2_counter > (average + 1)) ||
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(tm_preemptive_thread_3_counter < (average - 1)) ||
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(tm_preemptive_thread_3_counter > (average + 1)) ||
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(tm_preemptive_thread_4_counter < (average - 1)) ||
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(tm_preemptive_thread_4_counter > (average + 1)))
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{
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printf("ERROR: Invalid counter value(s). Preemptive counters should not be more that 1 different than the average!\n");
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}
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/* Show the time period total. */
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printf("Time Period Total: %lu\n\n", total - last_total);
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/* Save the last total. */
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last_total = total;
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}
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}
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